Improvement in grain-separators



PALMER 6L. PLAMNDN.

Grain Winnower.

N0. 35,701. Patented June 24, 1862.

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UNITED STATES PATENT Ottica..

JOHN J. PALMER AND AMBROSE PLAMONDON, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN GRAiN-SEPARATORS.

Specilieation forming part of Letters Patent No. 35,70 l, dated June 24, 1862.

To all whom it may concern.-

Beit known that we, J oHN J. PALMER and AMBRosE PLAMONDON, both of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Grain Separator; and we do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had t0 the accompanying drawings, making a part of this speciiication, in which- Figure lis a front view of our invention. Fig. 2 is a vertical section of the same, taken inthe line x, Fig. l. Fig. 3 is aplan or top view of the same.

Similar letters of reference indicate corresponding parts in the the several figures.

This invention consistsfin the employment or use of aseries of inclined screens and chutes placed within a suitable shoe, and arranged with a blast-spout in such a manner that the grain is made to pass consecutively over the screens and subjected to a blast in passing over each one of them, thereby rendering the separation of foreign substances from the grain far more thorough than it otherwise would be.

The invention also consists in a novel and useful improvement in the feeding of the grain to the screens, whereby a uniform feed is obtained and the choking or clogging of the hopper effectually prevented. y

To enable those skilled in the art to fully understand and construct our invention, we will proceed to describe it.

A represents a frame of rectangular form in which a shoe, B, is placed and suspended by elastic metal straps C. This shoe B has a shake motion given it by means of a connecting-rod, D, attached to a crank, a, on a shaft, E, at one side of the framing A.

F is a fan which `is placed in a case, G, underneath the shoe B. This fan extends the whole Width of the shoe, and it is driven by a belt, b, from the shaft E. The ease G of the fan is open at its ends, so that it may communicate with the external air, and the case com muuicates with the lower end of a spout, H, which extends upward at the back of the shoe, said spout being equal in width to the shoe, and extending upward its whole height.

Within the shoe B there are placed a series of inclined screens, I, which are parallel with each other and at equal distances apart, and

underneath each screen there is placed an inclined plate or chute, J, the latter having a reverse position to the screens, so that they may convey the grain which passes through one screen to the head or upper end of the one immediately below it, as will be fully uuderstood by referring to Fig. 2.

In the back c of the spout H there are made a series of slots or openings, d, which extend the whole width of the spout, or nearly so, and communicate ywith the spaces between the screens I and the chutes J. Each slot or open ing d is provided with a valve, K, by which the capacity of the slots or openings d may be regulated as desired, each valve being provided with a handle, e. which extends through j the side of the spout H, as shown in Fig. l.

L is a hopper which is placed on the top of v the frame A, and is provided with inclined sides f f. This hopper rests on a horizontal plate, g, on the frame A, on which a slide, M, is placed and so arranged asV to work or pass underneath the hopper, and close the lower end of the same or admit of it being more or less open, as desired.

The inner side, i, of the shoe B projects up above the level of the slide M, as shown in Fig. 2, and when the shoe B is in motion it will be seen that the upper end of the slidet' of the shoe serves as an agitator, and insures a uniform discharge of grain from the hopper, effeetually preventing the choking or clogging of the same. This result is due to the moving oft' at one side of the hopper while the opposite side is stationary. Were both sides stationary, or both moving, a like result would not be attained. The grain passes from the hopper L on the uppermost screen, I, in the shoe B, and passes through said screen onto the chute J below it, which chute conveys the grain to the upper end of the screen imvmediately below. The grain is thus passed from screen to screenand is subjected to a blast in passing through each one of them, as shown by the arrows in Fig. 2, the coarse foreign substances passing olf the lower ends of the screens, while the sound grain is-discharged from the lower screen.

This invention has been practically tested' Vgrain is deprived of all dust, and light impurities are separated by the screens, efficiency of which is greatly promoted by the ,feeding arrangement at the lower or discharge end of the hopper L, to wit, the projecting of the upper end of the inner side, 1I, of the shoe upward above the discharge-orifice of the hopper, so as to forni an agitator opposite the stationary part of the same.

Weare aware that inclined screens and chutes arranged as herein shown and described have been previously used, and We herefore do not claim the same separately;

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. Theinclined screens Tandchut-es J, placed JOHN J. PALMER. AMBROSE PLAMON DON. W itnesses:

PETER PLAMoNDoN,

THOMAS PORTER. 

